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Gas-particle flow characteristics of a centrally-fuelrich primary air burner: Simulation and experiment

  • Zhichao Chen*
  • , Zhengqi Li
  • , Shanping Shen
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The flow field within a three-level conical ring concentrator of a centrally-fuel-rich swirl coal combustion burner has been studied both experimentally and numerically. Measured and calculated values of gas velocities downstream from the third conical ring are in good agreement. In the outlet region after the third-level ring, a peak and a valley in the mean axial velocity profiles are seen to move respectively towards the axis and towards the wall; both decrease gradually in magnitude. The maximum in the relative axial particle volume flux appears at axial distance x/D=0.5. From simulations, oval-shaped recirculation zones appear behind each conical ring, the axial length increases as the ring level increases. Moreover, as x/D increases, in the region -1.0<x/D<0, the relative axial velocities increase monotonically and the functional dependence with axial distance is basically linear. The peak value of the relative axial velocities is located at axial distance x/D=0.26.

Original languageEnglish
Title of host publication2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011 - Proceedings
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011 - Wuhan, China
Duration: 25 Mar 201128 Mar 2011

Publication series

NameAsia-Pacific Power and Energy Engineering Conference, APPEEC
ISSN (Print)2157-4839
ISSN (Electronic)2157-4847

Conference

Conference2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011
Country/TerritoryChina
CityWuhan
Period25/03/1128/03/11

Keywords

  • Concentrator
  • Gas/particle flow
  • Numerical simulation

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